81971358

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{739}}^1$

素因数の和:909

約数の個数: 64

約数和(自身を含む): 198912000

約数和(自身を除く): 116940642

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 139, 266, 278, 399, 417, 739, 798, 834, 973, 1478, 1946, 2217, 2641, 2919, 4434, 5173, 5282, 5838, 7923, 10346, 14041, 15519, 15846, 18487, 28082, 31038, 36974, 42123, 55461, 84246, 98287, 102721, 110922, 196574, 205442, 294861, 308163, 589722, 616326, 719047, 1438094, 1951699, 2157141, 3903398, 4314282, 5855097, 11710194, 13661893, 27323786, 40985679, 81971358]

約数ペア:

[(1, 81971358), (2, 40985679), (3, 27323786), (6, 13661893), (7, 11710194), (14, 5855097), (19, 4314282), (21, 3903398), (38, 2157141), (42, 1951699), (57, 1438094), (114, 719047), (133, 616326), (139, 589722), (266, 308163), (278, 294861), (399, 205442), (417, 196574), (739, 110922), (798, 102721), (834, 98287), (973, 84246), (1478, 55461), (1946, 42123), (2217, 36974), (2641, 31038), (2919, 28082), (4434, 18487), (5173, 15846), (5282, 15519), (5838, 14041), (7923, 10346)]